Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual voto popular tem um líder liberal do rei, e assentos conquistados maiores que 116, e um ano de 1921?
 ###Tabelas: CREATE TABLE 2010_post_classic_senior_class_practice_times_and_leaderboard (2010_post_classic_senior_class_practice_times_and_leaderboard_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Rider VARCHAR, Sat 21 Aug VARCHAR, Mon 23 Aug VARCHAR, Tues 24 Aug VARCHAR, Wed 25 Aug VARCHAR, Thurs 26 Aug VARCHAR, Fri 27 Aug VARCHAR, Sat 28 Aug VARCHAR) CREATE TABLE electoral_history (electoral_history_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Seats in House INT, Liberal candidates INT, Seats won INT, Seat Change VARCHAR, Popular vote INT, % of popular vote VARCHAR, Result VARCHAR, Liberal leader VARCHAR) CREATE TABLE screen_actors_guild (screen_actors_guild_id AUTO_INCREMENT PRIMARY KEY, Year INT, Category VARCHAR, Film VARCHAR, Result VARCHAR, Lost to VARCHAR) CREATE TABLE wru_division_one_east (wru_division_one_east_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Played VARCHAR, Won VARCHAR, Drawn VARCHAR, Lost VARCHAR, Points for VARCHAR, Points against VARCHAR, Tries for VARCHAR, Points VARCHAR) CREATE TABLE overtime_rules (overtime_rules_id AUTO_INCREMENT PRIMARY KEY, Length of game VARCHAR, Date VARCHAR, Away team VARCHAR, Score VARCHAR, Home team VARCHAR)  
SELECT AVG Popular vote FROM electoral_history WHERE Liberal leader = king AND Seats won > 116 AND Year = 1921